AR Sponsor
Posted: 4/17/2008 6:45:36 AM EDT
|
I have a post ban barrel that I want to experiment with on a lathe. I would like to cut my own threads to attach FH or MB device. Where can I get a drawing that shows the correct dimensions for standard mil-spec barrel threading? How much of the barrel from the muzzle end do I turn down to 0.500" (dim A)? How much space do I leave between the threads and the turned down shoulder (dim B)? What is the OD of that space between the last thread and the shoulder (dim C)? 
|
A die has no place in threading a barrel. Buy a copy of Machinery's Handbook and go from there. You're trying for 1/2-28 threads. Everything you want to know about threading is contained in that book. I'd also suggest you start on a bit of steel bar stock and not a rifle barrel. 
|
Agreed... -Jbot |
Thank you. I was able to get the threads cut and they look great. |
AR Sponsor